oh-my-posh is a customizable prompt theme engine that renders command-line prompts across shells and platforms. Developers and terminal users use it to configure primary, secondary, right, and transient prompts in shells such as PowerShell, zsh, Bash, and cmd. The catalogue entries provide skills, instructions, agents, and an MCP integration for working with oh-my-posh.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add JanDeDobbeleer/oh-my-posh --skill project-knowledgegit clone --depth 1 https://github.com/JanDeDobbeleer/oh-my-poshWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/jandedobbeleer/oh-my-posh/project-knowledge)<a href="https://agentmods.dev/skills/jandedobbeleer/oh-my-posh/project-knowledge"><img src="https://agentmods.dev/badge/skills/jandedobbeleer/oh-my-posh/project-knowledge/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/jandedobbeleer/oh-my-posh/project-knowledge"><img src="https://agentmods.dev/badge/skills/jandedobbeleer/oh-my-posh/project-knowledge.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00097 | $0.00499 |
| Opus 5.5 | $0.00039 | $0.00200 |
| Sonnet 5.5 | $0.00019 | $0.00100 |
| Haiku 4.5 | $0.00010 | $0.00050 |
Grade A, and why
project-knowledge scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Project Knowledge
Non-obvious constraints, platform quirks, traps, and failed approaches. Read only the files the task touches; any
shell-script edit also needs testing. Entries are point-in-time: verify against the code and fix drift.
| Topic | Read when |
|---|---|
| codebase | Go internals: templates, sanitization, segments, cache, streaming, serve |
| release | release.yml, signing, packaging, CI gates, -race, rebasing on Windows |
| testing | Any shell-script edit; e2e/pty harnesses, WSL, ConPTY, Windows Terminal, nu |
| zsh | omp.zsh, zle widgets, coproc, zsh-vi-mode |
| pwsh | omp.ps1, PSReadLine, runspaces, engine events, pwsh perf |
| fish | omp.fish, fish jobs, fifos, key bindings |
| bash | omp.bash, PROMPT_COMMAND, readline, ble.sh |
| cmd-clink | omp.lua, Clink, Windows pipe lifecycles |
Write-back
- Append only verified entries that change what an agent does, phrased "do X / don't do Y, because Z", to the matching file (new file plus index row only when none fits). No narratives or history.
- Update or delete a stale entry instead of stacking a correction. Date it only when staleness matters.
- Commit knowledge updates with the change they relate to.
What ships with it
8 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 5d ago Changed · -17 lines · +16 tokens per session 28e8f2e01c53
- 1mo ago First seen · 49 lines · 81 tokens per session scan A f8fe0878cc71
project-knowledge is a skill published in the GitHub repository JanDeDobbeleer/oh-my-posh (23,592 stars, last pushed today), licensed MIT. It adds 97 tokens to every session and 499 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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